I use Gilletts DE, Gem Razors, Hoffritz slant, Muhl razors and a feather Stainless steel razor.
They all use DE razor blades with the exception of the Gem Razor which uses Single Edge Blades.
The plastic junk and multi-blade carts never appealed to me. Hair gets stuck between the blades and lots of razor burn and today....you'll also get burned with the price for the carts.
Most of the World still uses DE and Single Edge blades.....that should tell you something!
People refuse to get shafted and gouged by the cart makers when all the equipment that used to make all of the DE blades in the USA is now in Russia, Europe, India and the Far East.
Just because people in North America have more cash to spend, doesn't always mean they are stupid when it comes to shaving razors, blades, soaps, badger brushes etc....
My favorite razor at the moment is a 1910 Gillette Old style Open Comb razor. They are great to use for a nice 4 pass close shave. It's over 100 years old and still rocks.